The root canal treatment we are going to do for you now uses cotton wool that is anti-inflammatory and has a strong smell. It will take about four or five days to a week to have your tooth filled. Just filling. The quality of the filling depends on how long the tooth will last. But the porcelain you are talking about is a brace made after filling to protect the teeth and make it look beautiful. Not the same thing. The tooth must be filled first, a dental mold must be taken, and a porcelain crown must be made.
Wish you good luck~